John hewitson



J7 HEWITSON. Tool for Ornamenting Surfaces of Metals;

No. 225,828. Patented Mar. 23, I880.

UNITED STATES PATENT OFFICE.

JOHN HEWITSON, OF TAUNTON, MASSACHUSETTS, ASSIGNOR TO REED & BARTON, OF SAME PLACE.

TOOL FOR ORNAMENTING SURFACES OF METALS.

SPECIFICATION forming part of Letters Patent No. 225,828, dated March 23, 1880. Application filed September 20, 1879.

To all whom it may concern:

Be it known that I, JOHN HEWITSON, of Taunton, in the county of Bristol and State of Massachusetts, have invented a new and Improved Tool for Ornamenting Metal Surfaces; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompan ying drawings, forming part of this specification, in which- Figure 1 is a side, and Fig. 2 a face, view of the improved tool.

This invention relates to the construction of a tool for producing a finish upon metal surfaces, which I designatea silver-finish and it consists of a tool adapted to be placed in a lathe, and whose working-face is composed of a brush of metallic wires evened at the ends and. provided with a center of wood or other substance, as hereinafter described.

In the drawings, A represents the tool, which is constructed so as to be held in a lathe. Bis the metal-wire brush, the inner ends of the wires of which brush are emhed- (led in a softmetal head or otherwise fixed in place, and the other ends of which wires are made even and smooth. In the center of the bundle of wires, and appearing at the face of the brush, is acenter, a, made of wood orother material, which is fixed rigidly in the brushhead. and whose outer face is flush with the outer ends of the wires, sothat when the brush and its center revolve together the said center constitutes, when the brush is placed against the object to be ornamented, a centralizing bearing for the brush, to cause its wires to act concentrically on the surface to be ornamented.

In making use of the tool it is placed in the lathe-chuck and rotated, and the metal surface to be finished is then brought against the face of the brush. The effect produced is to score a series of diversified forms orindents upon the metal surface, making a new finish, which I call silver-finish.

In defining my invention more clearly, I would state that lam aware that a wire brush arranged to rotate on an axis more or less parallel with its wires is not new as a tool for ornamenting metal surfaces, and I therefore only claim such a brush when provided with acentering bearing, a, as described.

Having thus described my invention, what I claim as new is- A tool having a working-face composed of the evened ends of a wire brush provided with a central hearing-point, a,substantially as and for the purpose described.

JOHN HEWITSON.

Witnesses: I

THEo. P. HULL, B. R. PIERCE. 

